A metalcutting coolant that smells like rotten eggs on Monday morning is already in serious trouble. The hydrogen sulphide odour is produced by anaerobic bacteria that have been multiplying in...
Dosing Technologies
Auto-Dosing Unit
Compact Dosing, Built to Run Unattended
An Auto-Dosing Unit (ADU) pairs a peristaltic dosing pump with a timer, controller, or programmable circuit board inside a single, wall-mountable enclosure. The peristaltic pump moves chemical by compressing a flexible tube against a rotor — a simple mechanism with no seals or check valves in contact with the fluid, which suits viscous, corrosive, or particulate-laden liquids well. The controller decides when and how much to dose: on a repeating schedule, on a signal from host equipment, or from a live process reading.
Peristaltic dosing — a rotor compresses a flexible tube to move chemical, so no pump seals are exposed to the fluid being dosed
Timer or controller-driven — dosing follows a programmable schedule, an external signal, or a live pH/ORP/chlorine reading, depending on the application
Compact and self-contained — pump and control electronics share one IP65-rated enclosure, ready for wall mounting near the point of use
Four application types — Self-Service Laundry, Enzyme Dosing, Dishwashing, and Swimming Pool, each matched to its own dosing profile
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All Application Types
Peristaltic Pump + Controller
Self-Service Laundry ADU
Dosing units for coin-op and self-service laundromats, dispensing detergent and softener into each wash cycle on a timed or signal-triggered basis. Multi-pump controllers run several wash programmes from one unit.
Peristaltic Pump + Controller
Enzyme Dosing ADU
Timed enzyme dosing for grease traps and drain lines in commercial kitchens, breaking down FOG (fats, oils and grease) and keeping lines clear. A weekly programmable timer schedules dosing automatically, with no daily intervention required.
Peristaltic Pump + Controller
Dishwashing ADU
Dual-pump dosing units for professional dishwashers, metering detergent and rinse aid independently, each set to match wash chemistry and rinse-cycle requirements.
Peristaltic Pump + Controller
Swimming Pool ADU
Digital pH, ORP and free-chlorine dosing controllers for pool water treatment, using dosing pumps driven by live probe readings to keep pool chemistry within range automatically.
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Latest Resources
PWM vs 4-20mA: How Your Control Signal Affects Dosing Accuracy
When a dosing pump is connected to a controller, PLC, or water treatment system, it receives a signal that tells it how much to dose. The type of signal used...
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Ask most operators what a PTSA sensor and a tagged polymer sensor do, and the honest answer is usually “they both check the inhibitor.” That’s true in the loosest sense,...
The Calibration Habit Most Wastewater Plants Skip — And How the Atlanta Makes It Verifiable
A dosing pump’s displayed flow rate and its actual delivered flow rate are only guaranteed to match at the exact moment it was last calibrated. Backpressure changes as downstream valves...
Why Flow-Proportional Dosing Is More Accurate Than Timer-Based Dosing for Variable Flow Systems
Timer-based chemical dosing looks simple on paper: set a pump to run for a fixed period at fixed intervals, inject a known volume of chemical, move on. The problem is...
Pre-Bleed Lockout and Lockout Period: Why These Two Controller Features Matter for Cooling Tower Treatment Accuracy
Cooling tower water treatment controllers are most commonly evaluated on what they can control — conductivity setpoints, biocide dosing schedules, pH management. What is less often discussed is what they...